[s][/s]I will try to help but we need more information on your question because I think you are mixing many models together. I will answer the simpler ones.
Drilled and tapped for a scope on both the front and rear bridge are considered transition models and started around 1948. If you are still talking about pre 64 the aluminum floor plates were only on the featherweights I think started around 1954. The super grade marking is a totally different model but assuming it is aluminum it would have been a super grade featherweight but there are post 64 versions of this as well. I am out of town and away from my book so can’t quote anymore specifics and may be a little off from my memory.
Pictures would help or elaborate on what other questions you have.
Last edited by ldg397; 12/26/23.